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https://www.readbyqxmd.com/read/28350976/neuroendocrine-tumor-of-the-common-bile-duct-case-report
#1
C Raspanti, N Falco, V Silvestri, G Rotolo, S Bonventre, G Gulotta
Neuroendocrine tumors (NET) are a very heterogeneous group of neoplasms; in recent years we have seen an increase in their incidence (3.65 /100.000/year). They can be associated with hereditary endocrine syndromes (MEN, Von Hippel Lindau); they can occur at any age and the incidence is slightly higher in men than women. The aetiology of the neuroendocrine tumors is unclear; in most cases, inflammation of the bile ducts may be the underlying cause and for this reason, the initial patient's evaluation should be focused on the different aspects concerning the oncological one and the possible sequelae of the biliary obstructions that can evolve in biliary sepsis...
November 2016: Il Giornale di Chirurgia
https://www.readbyqxmd.com/read/28346906/long-term-exposure-to-high-air-pollution-induces-cumulative-dna-damages-in-traffic-policemen
#2
Chaochao Tan, Shijie Lu, Yupeng Wang, Yan Zhu, Ting Shi, Mingyue Lin, Zhonghua Deng, Zhu Wang, Nana Song, Shuna Li, Pingting Yang, Liyan Yang, Yuanyuan Liu, Zhiheng Chen, Keqian Xu
The specific effects of long-term exposure to high air pollution on human health and biological remain unclear. To explore the adverse health effects as well as biological mechanisms and biomarkers for durative exposure to air pollution, 183 traffic policemen and 88 office policemen were enrolled in this study. The concentration of PM2.5 in both the traffic and office policemen's working environments were obtained. Detailed personal questionnaires were completed and levels of inflammation, oxidative stress and DNA damage markers of all participants were analyzed in this study...
March 24, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28346054/genomic-regions-in-local-endangered-sheep-encode-potentially-favorable-genes
#3
Bianca Moioli, Roberto Steri, Gennaro Catillo
The economic evaluation of farm animal genetic resources plays a key role in developing conservation programs. However, to date, the link between diversity as assessed by neutral genetic markers and the functional diversity is not yet understood. Two genome-wide comparisons, using over 44,000 Single Nucleotide Polymorphisms, identified the markers with the highest difference in allele frequency between the Alpago endangered breed and two clusters, composed of four specialized dairy sheep, and four meat breeds respectively...
March 27, 2017: Animal Biotechnology
https://www.readbyqxmd.com/read/28345878/multispectral-optical-tweezers-for-biochemical-fingerprinting-of-cd9-positive-exosome-subpopulations
#4
Randy P Carney, Sidhartha Hazari, Macalistair Colquhoun, Di Tran, Billanna Hwang, Michael S Mulligan, James D Bryers, Eugenia Girda, Gary S Leiserowitz, Zachary James Smith, Kit S Lam
Extracellular vesicles (EVs), including exosomes, are circulating nanoscale particles heavily implicated in cell signaling, and can be isolated in vast numbers from human biofluids. Study of their molecular profiling and materials properties is currently underway for purposes of describing a variety of biological functions and diseases. However, the large, and as yet unquantified, variety of EV subpopulations differing in composition, size, and likely function, necessitates characterization schemes capable of measuring single vesicles...
March 27, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28345466/tumor-associated-calcium-signal-transducer-2-regulates-neovascularization-of-non-small-cell-lung-cancer-via-activating-erk1-2-signaling-pathway
#5
Xiaobin Guo, Xiaoming Zhu, Limin Zhao, Xiao Li, Dongjun Cheng, Keqing Feng
Lung cancer, especially the non-small-cell lung cancer, is a highly aggressive vascular cancer with excessively activated signaling pathways. Tumor-associated calcium signal transducer 2, also known as trop2, was identified to be correlated with tumor proliferation and invasion of non-small-cell lung cancer; however, the biological role of trop2 in neovascularization of non-small-cell lung cancer remained elusive. In this study, we first verified that trop2 was overexpressed in non-small-cell lung cancer tissues as well as cell lines and that the increased expression of trop2 promoted non-small-cell lung cancer cell proliferation and invasion...
March 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28345461/expression-and-prognostic-value-of-soluble-cd97-and-its-ligand-cd55-in-intrahepatic-cholangiocarcinoma
#6
Ze-Wu Meng, Min-Chao Liu, Hai-Jie Hong, Qiang Du, Yan-Ling Chen
The incidence rate of intrahepatic cholangiocarcinoma is rising, and treatment options are limited. Therefore, new biological markers of intrahepatic cholangiocarcinoma are needed. Immunohistochemistry and enzyme-linked immunosorbent assay were applied to analyze the expressions of CD97, CD55, and soluble CD97 in 71 patients with intrahepatic cholangiocarcinoma and 10 patients with hepatolithiasis. CD97 and CD55 were not expressed in hepatolithiatic tissues, but positive expression was observed in 76.1% (54/71) and 70...
March 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28345275/abnormal-frontoparietal-synaptic-gain-mediating-the-p300-in-patients-with-psychotic-disorder-and-their-unaffected-relatives
#7
Álvaro Díez, Siri Ranlund, Dimitris Pinotsis, Stella Calafato, Madiha Shaikh, Mei-Hua Hall, Muriel Walshe, Ángel Nevado, Karl J Friston, Rick A Adams, Elvira Bramon
The "dysconnection hypothesis" of psychosis suggests that a disruption of functional integration underlies cognitive deficits and clinical symptoms. Impairments in the P300 potential are well documented in psychosis. Intrinsic (self-)connectivity in a frontoparietal cortical hierarchy during a P300 experiment was investigated. Dynamic Causal Modeling was used to estimate how evoked activity results from the dynamics of coupled neural populations and how neural coupling changes with the experimental factors...
March 27, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28344863/tumor-infiltrating-lymphocytes-tils-from-patients-with-glioma
#8
Zhenjiang Liu, Qingda Meng, Jiri Bartek, Thomas Poiret, Oscar Persson, Lalit Rane, Elena Rangelova, Christopher Illies, Inti Harvey Peredo, Xiaohua Luo, Martin Vijayakumar Rao, Rebecca Axelsson Robertson, Ernest Dodoo, Markus Maeurer
Tumor-infiltrating lymphocytes (TILs) may represent a viable source of T cells for the biological treatment of patients with gliomas. Glioma tissue was obtained from 16 patients, tumor cell lines were established, and TILs were expanded in 16/16 cases using a combination of IL-2/IL-15/IL-21. Intracellular cytokine staining (ICS, IL-2, IL-17, TNFα and IFNγ production) as well as a cytotoxicity assay was used to detect TIL reactivity against autologous tumor cells or shared tumor-associated antigens (TAAs; i...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28344814/the-role-of-chemotherapy-and-new-targeted-agents-in-the-management-of-primary-prostate-cancer
#9
Sanjeev Srinivas Kumar, Simon Pacey
While early treatment of primary prostate cancer is very effective, the incidence of primary prostate cancer continues to rise and therefore the detection of men with high-risk non-metastatic prostate cancer and their subsequent management is becoming increasingly important. There continues to be no molecularly-targeted or chemotherapeutic options with proven, statistically significant survival benefit in this setting. However, there are indications that further risk stratification using molecular features could potentially help distinguish indolent from aggressive prostate cancer, ultimately providing biological markers that could guide a more personalised approach to therapy selection...
December 2016: Journal of Clinical Urology
https://www.readbyqxmd.com/read/28344779/accuracy-of-the-detection-of-binding-events-using-3d-single-particle-tracking
#10
Sara Carozza, Jamie Culkin, John van Noort
BACKGROUND: Nanoparticles can be used as markers to track the position of biomolecules, such as single proteins, inside living cells. The activity of a protein can sometimes be inferred from changes in the mobility of the attached particle. Mean Square Displacement analysis is the most common method to obtain mobility information from trajectories of tracked particles, such as the diffusion coefficient D. However, the precision of D sets a limit to discriminate changes in mobility caused by biological events from changes that reflect the stochasticity inherent to diffusion...
2017: BMC Biophysics
https://www.readbyqxmd.com/read/28344745/can-molecular-biomarkers-replace-a-clinical-risk-score-for-resectable-colorectal-liver-metastasis
#11
EDITORIAL
Torhild Veen, Kjetil Søreide
In resectable colorectal liver metastasis (CRLM) the role and use of molecular biomarkers is still controversial. Several biomarkers have been linked to clinical outcomes in CRLM, but none have so far become routine for clinical decision making. For several reasons, the clinical risk score appears to no longer hold the same predictive value. Some of the reasons include the ever expanding indications for liver resection, which now increasingly tend to involve extrahepatic disease, such as lung metastases (both resectable and non-resectable) and the shift in indication from "what is taken out" (e...
March 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28344553/youthful-processing-speed-in-older-adults-genetic-biological-and-behavioral-predictors-of-cognitive-processing-speed-trajectories-in-aging
#12
Nicholas T Bott, Brianne M Bettcher, Jennifer S Yokoyama, Darvis T Frazier, Matthew Wynn, Anna Karydas, Kristine Yaffe, Joel H Kramer
Objective: To examine the impact of genetic, inflammatory, cardiovascular, lifestyle, and neuroanatomical factors on cognitive processing speed (CPS) change over time in functionally intact older adults. Methods: This observational study conducted over two time points, included 120 community dwelling cognitively normal older adults between the ages of 60 and 80 from the University of California San Francisco Memory and Aging Center. Participants were followed with composite measures of CPS, calculated based on norms for 20-30 year-olds...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28344201/stenotic-bicuspid-and-tricuspid-aortic-valves%C3%A3-micro-computed-tomography-and-biological-indices-of-calcification
#13
Piotr Mazur, Ewa Wypasek, Bogusław Gawęda, Dorota Sobczyk, Przemysław Kapusta, Joanna Natorska, Krzysztof Piotr Malinowski, Jacek Tarasiuk, Maciej Bochenek, Sebastian Wroński, Katarzyna Chmielewska, Bogusław Kapelak, Anetta Undas
BACKGROUND: Valve calcification is well estimated by ex-vivo micro-computed tomography (micro-CT). The objective of this study was to investigate the associations between micro-CT findings and biological indices of calcification in aortic stenosis (AS), as well as differences between bicuspid aortic valve (BAV) and tricuspid aortic valve (TAV).Methods and Results:Aortic valves and plasma were obtained from patients undergoing valve surgery. Valves were dissected and underwent micro-CT, genetic analyses, and calcium content assessment...
March 24, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28344195/significance-of-serum-polyunsaturated-fatty-acid-level-imbalance-in-patients-with-acute-venous-thromboembolism
#14
Masaru Hiki, Tetsuro Miyazaki, Kazunori Shimada, Yurina Sugita, Megumi Shimizu, Tatsuro Aikawa, Shohei Ouchi, Tomoyuki Shiozawa, Kiyoshi Takasu, Shuhei Takahashi, Atsutoshi Takagi, Katsumi Miyauchi, Hiroyuki Daida
AIM: Polyunsaturated fatty acids (PUFAs) take part in various biological events linked to the pathogenesis of venous thromboembolism (VTE), including inflammation, endothelial dysfunction, and hypercoagulability. Several studies have demonstrated the association between PUFAs and the occurrence of VTE. However, the role of PUFAs in the pathogenesis of VTE remains unclear. METHODS: We enrolled 45 patients with acute VTE and 37 age-, gender-, and body mass index-matched healthy volunteers to examine their PUFA levels...
March 24, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/28344154/characterization-of-toxoplasma-gondii-isolates-from-herds-of-sheep-in-southern-brazil-reveals-the-archetypal-type-ii-genotype-and-new-non-archetypal-genotypes
#15
Tatiana da Silva Ramos, Hilda Fátima de Jesus Pena, Alceu Gonçalves Dos Santos Junior, Laura Maria Jorge de Faria Santos, Beatris Gonzales Cademartori, Solange Oliveira, Solange Maria Gennari, Andréa da Silva Ramos Rocha, Nara Amélia da Rosa Farias
Recent studies have demonstrated that, in Brazil and South America, strains of Toxoplasma gondii are often genotypically and biologically different from those found in countries on other continents. The objective of this study was to genotypically characterize T. gondii isolates from naturally infected sheep in herds in the southern region of the state of Rio Grande do Sul, Brazil, by means of the polymerase chain reaction with restriction fragment length polymorphism (PCR-RFLP). Five T. gondii isolates obtained from sheep in five municipalities in the state of Rio Grande do Sul were used...
March 23, 2017: Parasitology International
https://www.readbyqxmd.com/read/28343944/rack1-cooperates-with-nras-q61k-to-promote-melanoma-in-vivo
#16
C Campagne, E Reyes-Gomez, M E Picco, S Loiodice, P Salaun, J Ezagal, F Bernex, P H Commère, S Pons, D Esquerre, E Bourneuf, J Estellé, U Maskos, P Lopez-Bergami, G Aubin-Houzelstein, J J Panthier, G Egidy
Melanoma is the deadliest skin cancer. RACK1 (Receptor for activated protein kinase C) protein was proposed as a biological marker of melanoma in human and domestic animal species harboring spontaneous melanomas. As a scaffold protein, RACK1 is able to coordinate the interaction of key signaling molecules implicated in both physiological cellular functions and tumorigenesis. A role for RACK1 in rewiring ERK and JNK signaling pathways in melanoma cell lines had been proposed. Here, we used a genetic approach to test this hypothesis in vivo in the mouse...
March 23, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28343898/comparison-of-human-mesenchymal-stromal-cells-from-four-neonatal-tissues-amniotic-membrane-chorionic-membrane-placental-decidua-and-umbilical-cord
#17
Anelise Bergmann Araújo, Gabrielle Dias Salton, Juliana Monteiro Furlan, Natália Schneider, Melissa Helena Angeli, Álvaro Macedo Laureano, Lúcia Silla, Eduardo Pandolfi Passos, Ana Helena Paz
BACKGROUND: Mesenchymal stromal cells (MSCs) are being investigated as a potential alternative for cellular therapy. This study was designed to compare the biological characteristics of MSCs isolated from amniotic membrane (A-MSCs), chorionic membrane (C-MSCs), placental decidua (D-MSCs) and umbilical cord (UC-MSCs) to ascertain whether any one of these sources is superior to the others for cellular therapy purposes. METHODS: MSCs were isolated from amniotic membrane, chorionic membrane, umbilical cord and placental decidua...
March 23, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28343791/androgen-receptor-deficient-islet-%C3%AE-cells-exhibit-alteration-in-genetic-markers-of-insulin-secretion-and-inflammation-a-transcriptome-analysis-in-the-male-mouse
#18
Weiwei Xu, Tianhua Niu, Beibei Xu, Guadalupe Navarro, Matthew J Schipma, Franck Mauvais-Jarvis
AIMS: Testosterone action is mediated via the androgen receptor (AR). We have reported that male mice lacking AR selectively in β-cells (βARKO(-/y)) develop decreased glucose-stimulated insulin secretion (GSIS), producing glucose intolerance. We showed that testosterone action on AR in β-cells amplifies the insulinotropic action of GLP-1 on its receptor via a cAMP-dependent protein kinase-A pathway. METHODS: To investigate AR-dependent gene networks in β-cells, we performed a high throughput whole transcriptome sequencing (RNA-Seq) in islets from male βARKO(-/y) and control mice...
March 9, 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/28343355/anti-c1q-autoantibodies-as-markers-of-renal-involvement-in-childhood-onset-systemic-lupus-erythematosus
#19
Cécile Picard, Jean-Christophe Lega, Bruno Ranchin, Pierre Cochat, Natalia Cabrera, Nicole Fabien, Alexandre Belot
BACKGROUND: Childhood-onset systemic lupus erythematosus (cSLE) is rare, and considered more severe than its adult-onset counterpart. Lupus nephritis (LN) occurs more frequently in children, accounting for higher long-term morbidity and mortality compared with adults. Thus, reliable biological markers are needed to predict disease course. This study aimed to investigate the capacity of anti-C1q autoantibodies (Abs) to predict renal flare and global disease activity in cSLE patients, and association with disease activity and kidney involvement...
March 25, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28341747/gut-symbiotic-microbes-imprint-intestinal-immune-cells-with-the-innate-receptor-slamf4-which-contributes-to-gut-immune-protection-against-enteric-pathogens
#20
Allison Cabinian, Daniel Sinsimer, May Tang, Youngsoon Jang, Bongkum Choi, Yasmina Laouar, Amale Laouar
BACKGROUND: Interactions between host immune cells and gut microbiota are crucial for the integrity and function of the intestine. How these interactions regulate immune cell responses in the intestine remains a major gap in the field. AIM: We have identified the signalling lymphocyte activation molecule family member 4 (SLAMF4) as an immunomodulator of the intestinal immunity. The aim is to determine how SLAMF4 is acquired in the gut and what its contribution to intestinal immunity is...
March 24, 2017: Gut
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